The TC0304A from Tai-Saw Technology is a SAW Resonator with Frequency 621.98 to 622.048 MHz, Centre Frequency 622.017 MHz, Insertion Loss 1.1 to 2.5 dB, Capacitance 2.78 pF, Quality Factor Unloaded 10275. Tags: Surface Mount, SAW Resonator. More details for TC0304A can be seen below.